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Finding the Fourth Proportional to 719,361.84, 992,727.60 and 397,072.20

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Solution

The fourth proportional to 719,361.84, 992,727.60 and 397,072.20 is: 547,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,361.84 : 992,727.60 = 397,072.20 : x
  2. Step 2: Convert to fraction form
    719,361.84/992,727.60 = 397,072.20/x
  3. Step 3: Cross multiply
    719,361.84x = 992,727.60 × 397,072.20
  4. Step 4: Simplify right side
    719,361.84x = 394,184,532,132.72
  5. Step 5: Solve for x
    x = 394,184,532,132.72/719,361.84
  6. Step 6: Final answer
    x = 547,964.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.